The Pen Art Portfolio is an unbound collection of works produced by roughly fifty penmen and published by Zaner-Bloser in the year 1910. This incredible portfolio contains 48 plates with various styles of penwork, many of which would make it into the Zaner-Bloser publications for years to come. The rendering styles represented in these prints illustrate some of the necessary skills for engrossers and designers at the turn of the 20th century and should be studied by all who are interested in securing skill in the pen arts.